Office 365 refers to a group of software and service subscriptions offered by Microsoft.
Office 365 includes Exchange Online, a cloud-based email system.
In addition, Office 365 includes a cloud-based version of the Office suite:
Faculty and staff can utilize these applications for free when using a non-University owned computer, such as a home computer that does not have the desktop version of Office installed. The Outlook Web app provides the capability to access your mail and calendar from any computer that is connected to the Internet.